Plane gate valve with flow guide hole and single gate plate

Abstract

The utility model relates to the technical field of plane gate valves, in particular to a flow guide hole single-gate plane gate valve which comprises a valve body, one end of the valve body is fixedly connected with a connecting ring, a valve seat is arranged in the valve body, the inside of the valve seat is fixedly connected with a valve rod, a valve cover is sleeved on the outer side of the top end of the valve rod, and a valve plate is fixed in the valve seat. The top end of the valve rod is in transmission connection with the bevel gear, the bevel gear is sleeved with a support, the top end of the valve deck is sleeved with a filler ring, a grease injection opening is formed in the outer side of the valve deck, and a drain valve is arranged at the bottom end of the valve body. And then the hollow ball head is inserted into the inner groove in the connecting ring, the structure of the ball head can rotate in the limiting ring of the spherical inner groove, and compared with an existing structure, the limiting ring structure with the inner groove is adopted, so that external structures can be reduced, and the rotating function is achieved.

Description

Technical Field

[0001] This utility model relates to the field of planar gate valve technology, specifically to a single-gate planar gate valve with a guide hole. Background Technology

[0002] Flat gate valves, as a type of sliding valve with a parallel gate as the closing key, have low flow resistance and the gate slides on two valve seat surfaces. Therefore, they are suitable for media containing suspended particles and are widely used in the fields of oil and natural gas transportation or water supply projects.

[0003] Chinese patent CN201820063179.9 describes a fully guide-hole open-stem single-gate flat gate valve. It features a sealing plate fitted onto a spherical surface at the opening of the cavity. The sealing plate is fixedly connected to the first pipeline. When the second pipeline rotates, the angle of the second connecting flange can be adjusted, ensuring a tight fit between the second connecting flange and the flange on the conveying pipeline. This improves the working performance of the flat gate valve. However, in practical use, the combination of the sealing plate and the first pipeline results in a large structural size, significantly impacting the installation of external structures. Utility Model Content

[0004] Technical problems to be solved

[0005] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a single-gate planar gate valve with a flow guide hole, which can effectively solve the problem that the existing technology has a large structural size and has a significant impact on the installation of external structures during actual use.

[0006] Technical solution

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] This utility model provides a single-gate planar gate valve with a flow guide hole, including a valve body. One end of the valve body is fixedly connected to a connecting ring, and a valve seat is provided inside the valve body. The valve seat is fixedly connected to a valve stem. A valve cover is fitted on the outer side of the top end of the valve stem. A valve plate is fixed inside the valve seat. The top end of the valve stem is connected to a bevel gear for transmission. A bracket is fitted on the outer side of the bevel gear. A packing ring is fitted on the top end of the valve cover, and a grease inlet is provided on the outer side of the valve cover. A drain valve is provided at the bottom end of the valve body. The connecting ring includes a ring body and a limiting ring fixed on the outer side of the ring body. An inner groove is provided on the inner side of the limiting ring.

[0009] Furthermore, both the upper and lower ends of the valve seat are fitted and fixed to the valve body by a first O-ring and a second O-ring.

[0010] Furthermore, the valve body and valve cover are connected and fixed by studs and nuts, and the contact surfaces of the valve body and valve cover are both flange structures, and gaskets are fitted on the contact surfaces of the valve body and valve cover.

[0011] Furthermore, the bracket and the valve cover are connected and fixed by fastening studs and fastening nuts, and the contact surfaces of the bracket and the valve cover are both flange structures.

[0012] Furthermore, the valve stem is fitted with a packing ring on the inner side of the valve cover, and is connected to the valve cover by a third O-ring.

[0013] Furthermore, the bottom end of the outer cover structure of the bevel gear is fixedly connected to the bracket through locking studs and locking nuts, and both the outer cover structure of the bevel gear and the bracket are flange structures.

[0014] Furthermore, the limiting ring and the ring body are concentrically arranged, and the inner side of the inner groove of the limiting ring is a spherical arc surface structure, while the outer side of the ring body is provided with a flange hole.

[0015] Beneficial effects

[0016] The technical solution provided by this utility model has the following advantages compared with the known public technology:

[0017] This utility model, through its connecting ring structure, allows the connecting ring to be connected to the valve body via a pre-drilled flange hole and locked in place by a fastening stud and nut, forming a unified structure. Then, a hollow ball head is inserted into the inner groove of the connecting ring, allowing the ball head to rotate within the limiting ring of the spherical inner groove. Compared to existing structures, this device uses a limiting ring structure with an inner groove, reducing the need for external structures while still providing the rotational function.

[0018] In this device, by fitting two sets of O-ring structures at both the upper and lower ends of the valve seat, and fitting a third set of O-rings between the bracket and the valve cover, the stability between the structures can be improved. At the same time, the O-ring structure at the valve seat can improve the sealing performance and reduce the problem of media leakage. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a front view of the structure of this utility model;

[0022] Figure 3 This is a cross-sectional view of the structure of this utility model;

[0023] Figure 4 This is a structurally disassembled cross-sectional view of the connecting ring in this utility model.

[0024] The labels in the diagram represent: 1. Valve body; 2. First O-ring; 3. Second O-ring; 4. Valve seat; 5. Valve plate; 6. Valve stem; 7. Stud; 8. Nut; 9. Gasket; 10. Valve cover; 11. Packing ring; 12. Third O-ring; 13. Grease port; 14. Fastening stud; 15. Fastening nut; 16. Bracket; 17. Locking stud; 18. Locking nut; 19. Bevel gear; 20. Drain valve; 21. Connecting ring; 211. Ring body; 212. Limiting ring; 213. Inner groove. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0026] The present invention will be further described below with reference to the embodiments.

[0027] Example: A single-gate flat gate valve with a flow guide orifice, see attached diagram. Figure 1 -Appendix Figure 4 The valve body 1 includes a valve body 1, one end of which is fixedly connected to a connecting ring 21. A valve seat 4 is provided inside the valve body 1. The valve seat 4 is fixedly connected to a valve stem 6. A valve cover 10 is fitted on the outer side of the top end of the valve stem 6. A valve plate 5 is fixed inside the valve seat 4. The top end of the valve stem 6 is connected to a bevel gear 19. A bracket 16 is fitted on the outer side of the bevel gear 19. A packing ring 11 is fitted on the top end of the valve cover 10. A grease inlet 13 is provided on the outer side of the valve cover 10. A drain valve 20 is provided at the bottom end of the valve body 1. The connecting ring 21 includes a ring body 211 and a limiting ring 212 fixed on the outer side of the ring body 211. An inner groove 213 is provided on the inner side of the limiting ring 212.

[0028] Both ends of the valve seat 4 are fixed to the valve body 1 by means of the first O-ring 2 and the second O-ring 3.

[0029] The valve body 1 and valve cover 10 are connected and fixed by studs 7 and nuts 8, and the contact surfaces of the valve body 1 and valve cover 10 are both flange structures, with gaskets 9 fitted on the contact surfaces of the valve body 1 and valve cover 10; the bracket 16 and valve cover 10 are connected and fixed by fastening studs 14 and fastening nuts 15, and the contact surfaces of the bracket 16 and valve cover 10 are both flange structures; the valve stem 6 has a packing ring 11 fitted on the inner side of the valve cover 10, and is connected to the valve cover 10 by a third O-ring 12. 0. The bevel gear 19 is connected by a sleeve; the bottom end of the outer cover structure is fixedly connected to the bracket 16 through a locking stud 17 and a locking nut 18, and both the outer cover structure of the bevel gear 19 and the bracket 16 are flange structures; by sleeved with two sets of O-ring structures at both the upper and lower ends of the valve seat 4, and sleeved with a third set of O-rings between the bracket 16 and the valve cover 4, the stability between the structures can be improved. At the same time, the O-ring structure at the valve seat 4 can improve the sealing performance and reduce the problem of media leakage.

[0030] The limiting ring 212 and the ring body 211 are concentrically arranged, and the inner side of the inner groove 213 of the limiting ring 212 is a spherical arc surface structure. The outer side of the ring body 211 is provided with a flange hole. Through the structure of the connecting ring 21, the connecting ring 21 can first be connected to the valve body 1 through the pre-opened flange hole structure, and locked by the fastening stud 14 and fastening nut 15 to form a unified structure. Then, the hollow ball head is inserted into the inner groove 213 in the connecting ring 21. The structure of the ball head can rotate within the limiting ring 212 in the spherical inner groove 213. Compared with the existing structure, this device adopts the limiting ring 212 structure with inner groove 213, which can reduce the external structure and play a rotational function.

[0031] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. A single-gate planar gate valve with a flow guide orifice, characterized in that, The valve body (1) is included. One end of the valve body (1) is connected and fixed to a connecting ring (21). A valve seat (4) is provided inside the valve body (1). The inside of the valve seat (4) is connected and fixed to a valve stem (6). A valve cover (10) is sleeved on the outer side of the top of the valve stem (6). A valve plate (5) is fixed inside the valve seat (4). The top of the valve stem (6) is connected to a bevel gear (19) for transmission. A bracket (16) is sleeved on the outer side of the bevel gear (19). A packing ring (11) is sleeved on the top of the valve cover (10). A grease inlet (13) is opened on the outer side of the valve cover (10). A drain valve (20) is opened at the bottom of the valve body (1). The connecting ring (21) includes a ring body (211) and a limiting ring (212) fixed on the outer side of the ring body (211). An inner groove (213) is opened on the inner side of the limiting ring (212).

2. The single-gate planar gate valve with guide hole according to claim 1, characterized in that, The upper and lower ends of the valve seat (4) are both fixed to the valve body (1) by the first O-ring (2) and the second O-ring (3).

3. The single-gate planar gate valve with guide hole according to claim 1, characterized in that, The valve body (1) and valve cover (10) are connected and fixed by studs (7) and nuts (8), and the contact surfaces of the valve body (1) and valve cover (10) are both flange structures, and gaskets (9) are fitted on the contact surfaces of the valve body (1) and valve cover (10).

4. The single-gate planar gate valve with guide hole according to claim 1, characterized in that, The bracket (16) and the valve cover (10) are connected and fixed by fastening studs (14) and fastening nuts (15), and the contact surfaces of the bracket (16) and the valve cover (10) are both flange structures.

5. The single-gate planar gate valve with guide hole according to claim 4, characterized in that, The valve stem (6) is fitted with a packing ring (11) on the inner side of the valve cover (10), and is connected to the valve cover (10) by a third O-ring (12).

6. The single-gate planar gate valve with guide hole according to claim 1, characterized in that, The bottom end of the outer cover structure of the bevel gear (19) is fixedly connected to the bracket (16) by a locking stud (17) and a locking nut (18), and both the outer cover structure of the bevel gear (19) and the bracket (16) are flange structures.

7. The single-gate planar gate valve with guide hole according to claim 1, characterized in that, The limiting ring (212) and the ring body (211) are concentrically arranged, and the inner side of the inner groove (213) of the limiting ring (212) is a spherical arc surface structure, and the outer side of the ring body (211) is provided with a flange hole.

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